GB2248719B - Projection cathode-ray tube with uniform optical multiple interference film - Google Patents

Projection cathode-ray tube with uniform optical multiple interference film

Info

Publication number
GB2248719B
GB2248719B GB9117856A GB9117856A GB2248719B GB 2248719 B GB2248719 B GB 2248719B GB 9117856 A GB9117856 A GB 9117856A GB 9117856 A GB9117856 A GB 9117856A GB 2248719 B GB2248719 B GB 2248719B
Authority
GB
United Kingdom
Prior art keywords
ray tube
interference film
multiple interference
uniform optical
projection cathode
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
GB9117856A
Other versions
GB2248719A (en
GB9117856D0 (en
Inventor
Yasuo Iwasaki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Publication of GB9117856D0 publication Critical patent/GB9117856D0/en
Publication of GB2248719A publication Critical patent/GB2248719A/en
Application granted granted Critical
Publication of GB2248719B publication Critical patent/GB2248719B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/20—Filters
    • G02B5/28—Interference filters
    • G02B5/285—Interference filters comprising deposited thin solid films
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J31/00—Cathode ray tubes; Electron beam tubes
    • H01J31/08—Cathode ray tubes; Electron beam tubes having a screen on or from which an image or pattern is formed, picked up, converted, or stored
    • H01J31/10—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
    • C03C17/34—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions
    • C03C17/3411—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions with at least two coatings of inorganic materials
    • C03C17/3417—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions with at least two coatings of inorganic materials all coatings being oxide coatings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/02—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
    • H01J29/10—Screens on or from which an image or pattern is formed, picked up, converted or stored
    • H01J29/18—Luminescent screens
    • H01J29/185—Luminescent screens measures against halo-phenomena
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/02—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
    • H01J29/10—Screens on or from which an image or pattern is formed, picked up, converted or stored
    • H01J29/18—Luminescent screens
    • H01J29/28—Luminescent screens with protective, conductive or reflective layers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/86—Vessels; Containers; Vacuum locks
    • H01J29/89—Optical or photographic arrangements structurally combined or co-operating with the vessel
    • H01J29/896—Anti-reflection means, e.g. eliminating glare due to ambient light
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/86—Vessels; Containers; Vacuum locks
    • H01J29/89—Optical or photographic arrangements structurally combined or co-operating with the vessel
    • H01J29/898—Spectral filters
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2229/00—Details of cathode ray tubes or electron beam tubes
    • H01J2229/89—Optical components associated with the vessel
    • H01J2229/8913—Anti-reflection, anti-glare, viewing angle and contrast improving treatments or devices
    • H01J2229/8916—Anti-reflection, anti-glare, viewing angle and contrast improving treatments or devices inside the vessel
GB9117856A 1990-08-20 1991-08-19 Projection cathode-ray tube with uniform optical multiple interference film Expired - Fee Related GB2248719B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2219532A JPH081791B2 (en) 1990-08-20 1990-08-20 Projection type cathode ray tube

Publications (3)

Publication Number Publication Date
GB9117856D0 GB9117856D0 (en) 1991-10-09
GB2248719A GB2248719A (en) 1992-04-15
GB2248719B true GB2248719B (en) 1995-01-18

Family

ID=16736961

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9117856A Expired - Fee Related GB2248719B (en) 1990-08-20 1991-08-19 Projection cathode-ray tube with uniform optical multiple interference film

Country Status (6)

Country Link
US (1) US5645461A (en)
JP (1) JPH081791B2 (en)
KR (1) KR940009189B1 (en)
CA (1) CA2049491C (en)
DE (1) DE4127710C2 (en)
GB (1) GB2248719B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2759788B1 (en) * 1997-02-14 1999-05-07 Sextant Avionique REDUCTION OF INTERFERENCE IMAGES IN A HIGH HEAD VIEWFINDER
TW412644B (en) * 1998-07-28 2000-11-21 Sumitomo Chemical Co Front panel for display
KR100432114B1 (en) * 1999-04-28 2004-05-17 가부시키가이샤 히타치세이사쿠쇼 Color cathode-ray tube

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4405949A (en) * 1982-03-22 1983-09-20 Zenith Radio Corporation Liquid cooling in projection cathode ray tubes
GB2149203A (en) * 1983-11-04 1985-06-05 Mitsubishi Electric Corp Projection cathode-ray tube
US4904899A (en) * 1987-06-26 1990-02-27 Asahi Glass Company Ltd. Projection cathode ray tube
US4914510A (en) * 1988-12-23 1990-04-03 North American Philips Corporation Method for improving the white field uniformity of a projection color TV using CRTs having interference filters, projection color TV and CRTs resulting from the method
EP0361575A1 (en) * 1988-09-08 1990-04-04 Koninklijke Philips Electronics N.V. Method of vapour depositing an interference filter layer on the inside of a display window, a display window, a projection cathode ray tube and a projection television apparatus

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4021850A (en) * 1975-10-20 1977-05-03 Zenith Radio Corporation Color television picture tubes with improved implosion protection system
US4274110A (en) * 1980-01-08 1981-06-16 Zenith Radio Corporation Projection television system
US4755868A (en) * 1984-02-08 1988-07-05 Tds Patent Management, Inc. High brightness projection TV system using one or more CRTs with a concave phosphor surface acting to concentrate light into a lens system
JPS60257043A (en) * 1984-05-31 1985-12-18 Mitsubishi Electric Corp Cathode-ray tube
NL8402304A (en) * 1984-07-20 1986-02-17 Philips Nv PICTURE TUBE.
GB2176048B (en) * 1985-05-29 1989-07-05 Philips Nv Projection television display tube and projection television device comprising at least one such tube
GB8629552D0 (en) * 1986-12-10 1987-01-21 Philips Nv Television system & display tubes
JP2611491B2 (en) * 1990-05-17 1997-05-21 日本電気株式会社 Microprocessor
JPH0423051U (en) * 1990-06-14 1992-02-25

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4405949A (en) * 1982-03-22 1983-09-20 Zenith Radio Corporation Liquid cooling in projection cathode ray tubes
GB2149203A (en) * 1983-11-04 1985-06-05 Mitsubishi Electric Corp Projection cathode-ray tube
US4904899A (en) * 1987-06-26 1990-02-27 Asahi Glass Company Ltd. Projection cathode ray tube
EP0361575A1 (en) * 1988-09-08 1990-04-04 Koninklijke Philips Electronics N.V. Method of vapour depositing an interference filter layer on the inside of a display window, a display window, a projection cathode ray tube and a projection television apparatus
US4914510A (en) * 1988-12-23 1990-04-03 North American Philips Corporation Method for improving the white field uniformity of a projection color TV using CRTs having interference filters, projection color TV and CRTs resulting from the method

Also Published As

Publication number Publication date
US5645461A (en) 1997-07-08
DE4127710C2 (en) 1998-02-19
JPH081791B2 (en) 1996-01-10
KR940009189B1 (en) 1994-10-01
CA2049491A1 (en) 1992-02-21
KR920005233A (en) 1992-03-28
CA2049491C (en) 1996-10-22
GB2248719A (en) 1992-04-15
DE4127710A1 (en) 1992-02-27
GB9117856D0 (en) 1991-10-09
JPH04101333A (en) 1992-04-02

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Legal Events

Date Code Title Description
746 Register noted 'licences of right' (sect. 46/1977)

Effective date: 20000126

PCNP Patent ceased through non-payment of renewal fee

Effective date: 20050819